4. Cell Theory has three parts: The cell is the basic unit of life in all living things, all cells come from existing cells and all living things have cells. Which one is not true?* 1.Non-living things are made up of cells 2.Cells were discovered by Robert Hooke
3.All organisms are made up of one or more cells
4.All cells are microscopic in size

Which of the following statements about brain development and early childhood is true? the brain of a 5 year old is 60 percent the size of an adult brain the overall size of the brain does not increase dramatically from ages 3-15 by the time a child is 3 years of age, the brain is 25 percent of it's adult size the development that occurs inside the brain ends at the onset of adolescence